Comfort chair



C. SASSE Feb. 23, 1937.

COMFORT CHAIR Filed March 29, 1935 Patented Feb. 23, 1937 PATENT OFFICE COMFORT CHAIR Carl Sasse, La

uenau, Germany Application March 29, 1935, Serial No. 13,773 In Switzerland April 3, 1934 2 Claims.

The present invention relates to improvements in chairs. More particularly my invention relates to a rigid chair with body supporting surfaces designed to give the utmost comfort, and

5 to eliminate fatigue. A further object is to eliminate springs and cushion supporting surfaces in comfort chairs.

The specific improvements are described below, reference being made to the accompanying 10 ing drawing in which:

Fig. 1 is a perspective view of achair seat and back made according to my invention.

Fig. 2 is a cross-section of the back of the chair taken on the line 2-2 of Fig. 1.

Fig. 3 is a section of the back of the chair on line 3-3 of Fig. 2.

Fig. 4 is a similar section on line 4-4 of Fig. 2.

Fig. 5 is another section on line 5-5 of Fig. 2.

Fig. 6 is a perspective of an entire chair made according to my invention.

Fig. '7 is a cross-section of the chair seat on line 11 of Fig. 6.

Fig. 8 is a similar section on line 8-8 of Fig. 6.

The chair is made with legs H], or other supporting means, and a seat portion, generally indicated as 12. This seat portion has, extending upwardly from its rear edge, two uprights I4. The uprights I4 support the ends of a back rest l6. Preferably, all surfaces of the chair are made ;0 of wood or other rigid material.

It will be noted from Figs. 1, 6 and '7 that the front edge of the seat portion is rounded as at l8. At 20 there is a depression or hollow, the lowermost point 2| of which is about two thirds of the length of the seat from the front edge. (See Fig. '7.) This depression blends into a gradual straight slope toward the front and side edges of the seat, while toward the rear edge the slope is sharper and rounder. By thus shaping the seat of the chair, the buttocks and thighs of a person using the chair are under no appreciable strain and circulation is not impeded. The whole seat inclines rearwardly as shown.

The back rest It is supported above the chair 5 seat surface by two uprights. These uprights leave a clear space I! between the back edge of the chair surface and the lower edge of the back rest. Preferably, this space is approximately equal in height to the height of the back rest 0 surface. By this simple means, provision is made for the comfortable seating of persons having different sizes and shapes of buttocks.

The top edge of the back rest I6 is of a height above the seat portion somewhat below the arms 5 of the ordinary adult human body (about 40 cm.). In actual'practice, the back rest I6 is made about 20 centimeters high, being supported above the seat at a distance of about 20 centimeters.

The back rest I6 is curved in two ways. First,

as shown in Fig. 2, there is a convex vertical curvature. It will be noted that this curved surface is present in the entire lateral extent of the back rest. Second, there is a concave lateral curvature. This curved surface is present in the entire vertical extent of the back rest as shown in Figs. 3 through 5.

4 Because of the double curvature of the back rest, the back of an occupant of the chair is supported in a correct and comfortable fashion. The concave curvature supports the two sides of an occupants back. The convex curve supports the middle of an occupants back and prevents slouching or slumping. The apex of this convex curve appears at 22, preferably in the lower fourth of the back rest. It will be seen that althoughthe chair is made of rigid or inflexible material the shaping of the chair parts produces an extremely comfortable article of furniture.

I claim:

1. In a chair, a rigid seat portion, the surface of said seat portion being centrally depressed, the depression being deepest at a distance of approximately two-thirds of the length of the seat from the front edge and rising gradually to the rest above said seat being somewhat less than the height of an ordinary persons arms above the seat, the vertical dimension of the space between the back rest and the seat being approximately equal to the vertical dimension of the back rest.

2. In a shaped chair, a rigid seat portion, a rigid back rest, and uprights rigidly supporting the back rest in spaced relation above one edge of the seat portion, the surface of said back rest being convex vertically and concave horizontally, the apex of convexity occurring in the lower fourth of the back rest, the height of the top edge of said back rest above said seat being somewhat less than the height of an-ordinary persons arms above the seat, the vertical dimension of the space between the back rest and the seat being approximately equal to the vertical dimension of the back rest.

CARL SASSE.

back rest, the height of the top edge of said back 

